JP2003222351A - Air heat exchange unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air heat exchange unit capable of being installed in a narrow space, having a wide degree of freedom in the layout of refrigerant piping, and easy to make maintenance. <P>SOLUTION: The air heat exchange unit is equipped with a first 1 and a second heat exchanger 2 arranged approximately vertically and a third 3 and a fourth heat exchanger 4 each extending from the vicinity of the bottoms upward aslant relative to the inside widthwise of the first 1 and second heat exchangers 2 and with the tops contacting with each other. Accordingly, the space R between the third 3 and fourth heat exchangers 4 can be made greater than the conventional arrangement in which the first and second heat exchangers are installed in an inclined manner, and the amount of the air which the third 3 and fourth heat exchangers 4 such in through this space R can be made greater, which enables reduction of the air passing amount of the first 1 and second heat exchangers 2 compared with the conventional arrangement, and the air heat exchange unit can be installed in a narrow space such that the first 1 and second heat exchangers 2 are disposed in proximity to a wall, etc. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an air heat exchange unit.

[0002]

2. Description of the Related Art Conventionally, as shown in the cross-sectional view of FIG. 2, an air heat exchange unit has a first heat exchanger 51 and a second heat exchanger 52 which are inclined from the lower end toward the upper side in the width direction. And the first heat exchanger 51 and the second heat exchanger 52
A third heat exchanger 53 and a fourth heat exchanger 54, each of which extends obliquely upward inward in the width direction from the lower end of the above, and whose upper ends are connected to each other. A compressor 57 is arranged in the space T below the first and second heat exchangers 51 and 52, and the refrigerant compressed by the compressor 57 is introduced into the refrigerant pipe 59 through the first to fourth heat exchangers 51 and 52. , 53, 54 to guide the first to fourth heat exchangers 51, 52, 53, 54.
Heat is exchanged between the air guided to the air and the refrigerant.
At this time, the first heat exchanger 51 and the third heat exchanger 5
As shown by an arrow E, the first fan 61 provided above the third fan guides air from the outside to the inside, and at the same time, the third heat exchanger 53 shows an arrow F. It guides the air from inside to outside. Further, the second fan 62 provided above the second heat exchanger 52 and the fourth heat exchanger 54 guides air from the outside to the inside as shown by an arrow G to the second heat exchanger 52. With
Air directed from the inside to the outside is guided to the fourth heat exchanger 54 as shown by an arrow H. The air guided to the third heat exchanger 53 and the fourth heat exchanger 54 is the third and the fourth.
The air flows into the space S between the heat exchangers 53 and 54 from the outside of the air heat exchange unit in a direction substantially perpendicular to the paper surface. Third above
The refrigerant pipe 59 is arranged between the lower end of the heat exchanger 53 and the lower end of the fourth heat exchanger 54. In addition, the space S is provided in the third and fourth heat exchangers 53, 54 when the air heat exchange unit is maintained.
Used as a work space.

[0003]

However, in the above conventional air heat exchange unit, since the first heat exchanger 51 and the second heat exchanger 52 are inclined, the third heat exchanger 53 and the third heat exchanger 53 are provided. 4 The width for arranging the heat exchanger is relatively narrow. Therefore, the third and fourth heat exchangers 53,
The space S between 54 is relatively small. Therefore, the third and fourth heat exchangers 53, 54 flow into the space S and
Since the amount of air that passes through is small, the amount of air that flows into the first and second heat exchangers 51 and 52 is set to compensate for the small amount of air that passes through the third and fourth heat exchangers 53 and 54. The slits 70 are provided in the outer plate of the space T so that the air flows from the space T into the heat exchangers 53 and 54. Therefore, the first and second heat exchangers 5
Since the slits 1, 52 and the slit 70 of the outer plate of the space T need to be relatively separated from obstacles such as walls, the conventional air heat exchange unit cannot be installed in a narrow space. is there.

The lower end of the third heat exchanger 53 and the fourth
Since the distance between the lower end of the heat exchanger 54 is relatively small,
There is a problem that the degree of freedom in the arrangement of the refrigerant pipe 59 is small. Furthermore, since the space S is relatively small, the third and fourth heat exchangers 53 and 54 are used for maintenance or the like.
Has a problem that the working space is small and maintenance is difficult.

Therefore, an object of the present invention is to provide an air heat exchange unit which can be arranged in a relatively narrow space, has a high degree of freedom in the arrangement of refrigerant pipes, and is easy to maintain.

[0006]

In order to achieve the above object, an air heat exchange unit according to the invention of claim 1 has a first heat exchanger and a second heat exchanger arranged substantially vertically, and the first heat exchanger. A third heat exchanger and a fourth heat exchanger that extend from the vicinity of the lower ends of the heat exchanger and the second heat exchanger toward the diagonally upper side in the width direction and have their upper ends close to each other;
Air flows from the outside to the inside of the first heat exchanger and the second heat exchanger, and the third heat exchanger and the fourth heat exchanger.
The heat exchanger is characterized in that air is formed from the inside to the outside.

According to the air heat exchange unit of claim 1,
The first heat exchanger and the second heat exchanger are arranged substantially vertically, and the third heat exchanger and the fourth heat exchanger are widened from near the lower ends of the first heat exchanger and the second heat exchanger. Since they respectively extend obliquely upward inward in the direction, the third heat exchanger and the fourth heat exchanger are wider in the width direction than in the conventional air heat exchange unit in which the first and second heat exchangers are inclined. The ratio can be increased. That is, the third heat exchanger and the fourth heat exchanger are arranged such that the angle between the lower ends of the third heat exchanger and the fourth heat exchanger is smaller than that of the conventional one and the distance between the lower ends thereof is larger than that of the conventional one. Therefore, the space between the third heat exchanger and the fourth heat exchanger becomes larger than before, so that the air that flows into this space and passes through the third heat exchanger and the fourth heat exchanger. The amount increases. As a result, it is not necessary to increase the amount of air introduced to the first heat exchanger and the second heat exchanger as in the conventional case, so that the air heat exchange unit is separated from an obstacle such as a wall that blocks the flow of air. Can be made relatively small. As a result, the air heat exchange unit according to claim 1 can be installed in a narrow space. Further, unlike the conventional case, it is not necessary to provide a slit in the outer plate under the air heat exchange unit.

Further, since the distance between the lower end of the third heat exchanger and the lower end of the fourth heat exchanger is larger than before, for example, a refrigerant pipe for guiding the refrigerant to the first to fourth heat exchangers. Can be arranged with a greater degree of freedom than before, and a compressor or the like connected to the refrigerant pipe can be arranged with a greater degree of freedom than before.

Further, since the space between the third heat exchanger and the fourth heat exchanger is larger than before, the work such as maintenance of the third and fourth heat exchangers becomes easier than before. .

The upper end of the third heat exchanger and the upper end of the fourth heat exchanger may be in contact with each other or separated from each other as long as they are close to each other.

The air heat exchange unit according to the invention of claim 2 is
The air heat exchange unit according to claim 1, wherein a first fan is provided above the third heat exchanger to guide air to the first heat exchanger and the third heat exchanger, and the fourth heat exchanger. A second fan is provided above the heat exchanger and guides air to the second heat exchanger and the fourth heat exchanger.

According to the air heat exchange unit of claim 2,
The first fan effectively forms an air flow from the outside to the inside of the first heat exchanger and an air flow from the inside to the outside of the third heat exchanger, and the second fan is formed. Thus, an air flow from the outside to the inside of the second heat exchanger and an air flow from the inside to the outside of the fourth heat exchanger are effectively formed.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the embodiments shown in the drawings.

FIG. 1 is a sectional view showing an air heat exchange unit according to an embodiment of the present invention. This air heat exchange unit includes a first heat exchanger 1 and a second heat exchanger 2 which are arranged substantially vertically, and the width direction inside from the lower end vicinity of the first heat exchanger 1 and the second heat exchanger 2 described above. The third heat exchanger 3 and the fourth heat exchanger 4 each of which extends obliquely upward and whose upper ends are in contact with each other. A first fan 11 is provided above the third heat exchanger 3, and a second fan 12 is provided above the fourth heat exchanger 4. A compressor 7 is arranged below the first heat exchanger 1 and the second heat exchanger 2, and the compressor 7 is connected to the first to fourth heat exchangers 1, 2, through a refrigerant pipe 9. It is connected to 3 and 4. The refrigerant pipe 9 is arranged between the lower end of the third heat exchanger 3 and the lower end of the fourth heat exchanger 4. The first to fourth heat exchangers 1, 2, 3, 4 are further sequentially connected to an electronic expansion valve (not shown) and a cooler, and the cooler is connected to the compressor 7 to form a refrigeration circuit. I am configuring.

When the air heat exchange unit having the above structure is operated, the compressor 7 compresses the refrigerant, and the compressed refrigerant passes through the refrigerant pipe 9 and the first to fourth heat exchangers 1, 1.
It is sent to 2, 3 and 4. Here, the first fan 11 provided above the third heat exchanger 3 is swirled, and the first fan 11 is rotated.
Air flows from the outside to the inside of the heat exchanger 1 as shown by an arrow A, and the air flows from the inside to the outside of the third heat exchanger 3 as shown by an arrow B. Further, the second fan 12 provided above the fourth heat exchanger 4 is swirled, and air flows in the second heat exchanger 2 from the outside to the inside as shown by an arrow C, and Air flows from the inside to the outside of the fourth heat exchanger 4 as indicated by an arrow D. Heat exchange is performed between the air passing through the first to fourth heat exchangers 1, 2, 3 and 4 and the refrigerant guided to the first to fourth heat exchangers 1, 2, 3 and 4. , The temperature of this refrigerant falls. The refrigerant whose temperature has dropped is reduced in pressure by an electronic expansion valve (not shown) to a low pressure / low temperature, and the low-pressure / low temperature refrigerant cools the cooling water introduced to the cooler (not shown). The refrigerant that has cooled the cooling water by this cooler returns to the compressor 7.

In the air heat exchange unit of this embodiment, the third heat exchanger 3 and the fourth heat exchanger 4 are the same as those of the first heat exchanger 1 and the second heat exchanger 2 arranged substantially vertically. Since they respectively extend from the vicinity of the lower end toward the diagonally upper side in the width direction, the distance between the lower end of the third heat exchanger 3 and the lower end of the fourth heat exchanger 4 is larger than in the conventional case. That is, the third
The width of the space R between the heat exchanger 3 and the fourth heat exchanger 4 is larger than in the conventional case. Therefore, since the space R is larger than before, the amount of air flowing into the space R from the outside of the air heat exchange unit and passing through the third heat exchanger 3 and the fourth heat exchanger 4 is larger than before. . As a result, there is no need to increase the amount of air introduced to the first and second heat exchangers 1 and 2 as in the conventional case or to provide a slit in the outer plate of the lower portion U of the space R to allow air to flow. In the air heat exchange unit of the embodiment, the distance between the first and second heat exchangers 1 and 2 and the outer plate of the lower portion U and the obstacle such as the wall can be made relatively small. That is, the air heat exchange unit of the present embodiment is
Good heat exchange capacity can be obtained even when installed in a relatively narrow space such as a wall close to the periphery.

In order to shorten the distance from the compressor 7 to the first to fourth heat exchangers 1, 2, 3, 4, the compressor 7 and the third heat exchanger 3 and the fourth heat exchanger. It is necessary to place it close to the space R between the container and the container. Here, since the distance of the lower end of the space R of the present embodiment, that is, the distance between the lower end of the third heat exchanger and the lower end of the fourth heat exchanger is larger than the conventional one, it is compressed to a wider range than the conventional one. Machine 7 can be placed. That is, the degree of freedom in the arrangement of the compressor 7 can be increased as compared with the conventional one. Further, the refrigerant pipe 9 connecting the compressor 7 and the first to fourth heat exchangers 1, 2, 3, 4 is connected to the lower end of the third heat exchanger in which the refrigerant pipe 9 is arranged and the fourth pipe. Since the distance to the lower end of the heat exchanger is larger than before, the degree of freedom in arrangement can be made larger than before.

Further, since the space R between the third heat exchanger 3 and the fourth heat exchanger 4 can be made larger than in the conventional case, work such as maintenance of the third and fourth heat exchangers 3 and 4 is performed. However, it becomes easier than before.

In the above embodiment, the upper end of the third heat exchanger 3 and the upper end of the fourth heat exchanger 4 are in contact with each other, but they may be apart from each other.

[0020]

As is apparent from the above, according to the air heat exchange unit of the first aspect of the present invention, the first heat exchanger and the second heat exchanger which are arranged substantially vertically, and the first heat exchange. A third heat exchanger and a fourth heat exchanger that extend from the vicinity of the lower ends of the heat exchanger and the second heat exchanger toward the diagonally upper side in the width direction and have their upper ends close to each other; Since the air flows from the outside to the inside in the exchanger and the second heat exchanger, the air flows from the inside to the outside in the third heat exchanger and the fourth heat exchanger. The distance between the lower end of the third heat exchanger and the lower end of the fourth heat exchanger is made larger than in the conventional case, and the space between the third heat exchanger and the fourth heat exchanger is made larger than in the conventional case. Can also be large. Therefore, the amount of air flowing into the space and passing through the third heat exchanger and the fourth heat exchanger increases, and the amount of air introduced to the first and second heat exchangers as in the conventional case increases. In addition, since it is not necessary to introduce air from the lower part of the air heat exchange unit, the distance between the first and second heat exchangers and obstacles such as walls can be made relatively small. As a result, the air heat exchange unit according to claim 1 can be installed in a relatively narrow space without deteriorating the air heat exchange capacity. Further, since the space between the third heat exchanger and the fourth heat exchanger can be made larger than before, the refrigerant pipe to be arranged in the lower part of this space and the compressor connected to this refrigerant pipe. And the like can be arranged with a greater degree of freedom than in the past, and work such as maintenance of the third heat exchanger and the fourth heat exchanger can be performed more easily than in the past.

According to the air heat exchange unit of the second aspect of the present invention, the air heat exchange unit is provided above the third heat exchanger and the first heat exchanger is provided.
A first fan for guiding air to the heat exchanger and the third heat exchanger,
A second fan provided above the fourth heat exchanger to guide air to the second heat exchanger and the fourth heat exchanger is provided, and thus the first heat exchange is performed by the first fan. A flow of air from the outside to the inside of the heat exchanger and a flow of air from the inside to the outside of the third heat exchanger can be effectively formed, and the second fan from the outside to the second heat exchanger. An inflow of air and an inflow of air from the inside to the outside can be effectively formed in the fourth heat exchanger.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an air heat exchange unit according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a conventional air heat exchange unit.

[Explanation of symbols]

1st heat exchanger 2 Second heat exchanger 3 3rd heat exchanger 4th heat exchanger 7 compressor 9 Refrigerant piping 11 First Fan 12 Second Fan

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hirokazu Ishikawa             Daiichi Nishiichitsuya 1-1, Settsu City, Osaka Prefecture             Yodogawa Manufacturing Co., Ltd. F-term (reference) 3L051 BE05 BE06                 3L054 BA05 BB03

Claims (2)

[Claims] 1. A first heat exchanger (1) arranged substantially vertically.
And the second heat exchanger (2), and extends from the vicinity of the lower ends of the first heat exchanger (1) and the second heat exchanger (2) diagonally upward inward in the width direction, and the upper ends thereof. A third heat exchanger (3) and a fourth heat exchanger (4) close to each other, wherein the first heat exchanger (1) and the second heat exchanger (2) are:
Air flowing from the outside to the inside, and the third heat exchanger (3) and the fourth heat exchanger (4) are formed so that the air flows from the inside to the outside. Heat exchange unit. 2. The air heat exchange unit according to claim 1, wherein the air heat exchange unit is provided above the third heat exchanger (3) and is provided with the first heat exchanger.
A first fan (11) for guiding air to the heat exchanger (1) and the third heat exchanger (3), and a second fan provided above the fourth heat exchanger (4).
An air heat exchange unit comprising a heat exchanger (2) and a second fan (12) for guiding air to the fourth heat exchanger (4).